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TPS62240: TPS62240

pb ben
Prodigy 210 points
Part Number: TPS62240

Hi, I have a board where the VIN of TPS62240 is connected to a battery.

What happens when the VIN goes down the 3,1V setted? The TPS62240 switch off or VOUT go down with the VIN?

Many thanks.

  • +1
    TI__Expert 3611 points

    Hi,

    The device will not turn off, it will enter 100% dropout mode.
    According to the datasheet:
    "The minimum input voltage to maintain regulation depends on the load current and output voltage, and can be calculated as:
    VINmin = VOUTmax + IOUTmax × RDS(on)max + RL". So if VIN goes below this value - the converter will enter 100% mode

    More about the 100% mode operation of this device can be read in Section 8.4.3 in the datasheet.
    The only case where the device turns off is if VIN drops below the High level EN voltage threshold. 

    Regards,
    Davor